HTML Entity for Circled Dash (⊝)

Beginner
⏱️ 5 min read
📚 Updated: Jun 2026
🎯 1 Code Example
Unicode U+229D

What You'll Learn

How to display the Circled Dash (⊝) in HTML using numeric references, named entities, and CSS escapes. This character is U+229D (CIRCLED DASH) in the Mathematical Operators block (U+2200–U+22FF). It is used in formal math notation as a circled-dash operator.

You can use the named entity ⊝, hex ⊝, decimal ⊝, or CSS \229D. Do not confuse ⊝ with Circled Minus U+2296 (⊖, ⊖) or plain minus U+2212 (−).

⚡ Quick Reference — Circled Dash

Unicode U+229D

Mathematical Operators block

Hex Code ⊝

Hexadecimal reference

HTML Code ⊝

Decimal reference

Named Entity ⊝

Standard HTML entity

Reference Table
Name           Value
────────────   ──────────
Unicode        U+229D
Hex code       ⊝
HTML code      ⊝
Named entity   ⊝
CSS code       \229D
1

Complete HTML Example

This example demonstrates the Circled Dash (⊝) using hexadecimal code, decimal HTML code, the named entity, and a CSS content escape:

html
<!DOCTYPE html>
<html>
<head>
 <style>
  #point:after{
   content: "\229D";
  }
 </style>
</head>
<body>
<p class="math">Circled Dash using Hexa Decimal: &#x229D;</p>
<p class="math">Circled Dash using HTML Code: &#8861;</p>
<p class="math">Circled Dash using HTML Entity: &odash;</p>
<p class="math" id="point">Circled Dash using CSS Entity: </p>
</body>
</html>
Try it Yourself

🌐 Browser Support

The Circled Dash entity is universally supported in all modern browsers:

Chrome 1+
Firefox 1+
Safari 1+
Edge 12+
Opera 4+
Android 4.4+
iOS Safari 1+

👀 Live Preview

See the Circled Dash in math and notation contexts:

Binary expression A ⊝ B
Named entity x &odash; y
Large glyph
vs related ops Dash: ⊝ (U+229D)   Minus: ⊖ (U+2296)   Asterisk: ⊛ (U+229B)
Monospace refs &#x229D; &#8861; &odash; \229D

🧠 How It Works

1

Hexadecimal Code

&#x229D; uses the Unicode hexadecimal value 229D to display the Circled Dash.

HTML markup
2

Decimal HTML Code

&#8861; uses the decimal Unicode value 8861 to display the same character.

HTML markup
3

Named HTML Entity

&odash; is the standard named entity for U+229D—short for “operator dash.”

HTML markup
4

CSS Entity

\229D is used in CSS stylesheets, particularly in the content property of pseudo-elements like ::before and ::after.

CSS stylesheet
=

Same visual result

All four methods produce the Circled Dash glyph: . Unicode U+229D sits in Mathematical Operators (U+2200–U+22FF).

Use Cases

The Circled Dash (⊝) commonly appears in:

∑ Math notation

Equations and formal notation using the circled-dash operator.

∪ Set theory

Set operations, algebra, and symmetric-difference-related notation.

📐 Scientific docs

Technical papers and research content with operator symbols.

📚 Education

Math tutorials, textbooks, and e-learning platforms.

🎨 Design

Interfaces and creative typography using circled operator glyphs.

🔤 Symbol references

Unicode tables and math operator glossaries.

♿ Accessibility

Use MathML or aria-label="circled dash operator" for screen readers.

💡 Best Practices

Do

  • Prefer &odash; for readable math HTML source
  • Use math-friendly fonts (Cambria Math, STIX Two Math, serif)
  • Keep entity style consistent within a document
  • Consider MathML for complex equations
  • Distinguish U+229D from U+2296 in explanatory text

Don’t

  • Confuse U+229D (⊝) with U+2296 Circled Minus (⊖)
  • Put CSS escape \229D inside HTML text nodes
  • Assume every font renders Mathematical Operators identically
  • Use ⊝ decoratively where a plain minus is intended
  • Mix entity styles randomly in one file

Key Takeaways

1

Named entity is the easiest option

&odash;
2

Numeric references also render ⊝

&#x229D; &#8861;
3

For CSS stylesheets, use the escape in the content property

\229D
4

U+229D CIRCLED DASH — not U+2296

5

Four methods, one glyph — all widely supported

❓ Frequently Asked Questions

Use &odash; (named entity), &#x229D; (hex), &#8861; (decimal), or \229D in CSS content. All produce ⊝.
U+229D (CIRCLED DASH). Mathematical Operators block (U+2200–U+22FF). Hex 229D, decimal 8861.
For mathematical expressions, set theory notation, technical documentation, educational math content, and operator symbol reference pages.
HTML entities (&odash;, &#8861;, or &#x229D;) go directly in markup. The CSS escape \229D is used in stylesheets, typically in the content property of pseudo-elements.
Yes. &odash; is the named entity for U+229D. Circled Minus is a different character: U+2296 (⊖) with &ominus;.

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About the author

Mari Selvan M P
Mari Selvan M P 🔗

Developer, cloud engineer, and technical writer

  • Experience 12 years building web and cloud systems
  • Focus Full Stack Development, AWS, and Developer Education

I write practical tutorials so students and working developers can learn by doing—from databases and APIs to deployment on AWS.

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